:root {
  --paper: #E3E1D0;
  --card: #EDEBDD;
  --ink: #17313A;
  --teal: #2F5D62;
  --mustard: #C9992E;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--paper);
  color: var(--ink);
  font-family: "Old Standard TT", Georgia, serif;
  line-height: 1.6;
}

.masthead,
main {
  width: min(46rem, 100% - 2rem);
  margin-inline: auto;
}

.masthead {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 3rem 0 1.5rem;
  border-bottom: 4px double var(--ink);
}

.logo {
  width: 4.5rem;
  height: 4.5rem;
  border-radius: 50%;
  border: 2px solid var(--ink);
  object-fit: cover;
  filter: sepia(0.35) saturate(0.85);
  /* tones the gif toward the paper palette */
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 7vw, 2.75rem);
  font-weight: 700;
  line-height: 1.1;
}

.tagline {
  margin: 0.25rem 0 0;
  font-style: italic;
  color: var(--teal);
}

.routes {
  list-style: none;
  margin: 2.5rem 0 1.5rem;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.route {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--card);
  border: 2px solid var(--ink);
  color: inherit;
  text-decoration: none;
}

.route:hover,
.route:focus-visible {
  background: var(--mustard);
}

.route:focus-visible {
  outline: 3px solid var(--teal);
  outline-offset: 3px;
}

.path {
  font-family: "Courier Prime", "Courier New", monospace;
  font-size: 1.5rem;
  font-weight: 700;
}

.note {
  font-style: italic;
  text-align: right;
}

.foot {
  margin: 0 0 3rem;
  color: var(--teal);
}

.foot code {
  font-family: "Courier Prime", "Courier New", monospace;
  color: var(--ink);
}

@media (max-width: 30rem) {
  .route {
    flex-direction: column;
    gap: 0.25rem;
  }

  .note {
    text-align: left;
  }

  #demo-status {
    min-height: 14rem;
  }
}

.demo {
  margin: 0 0 2rem;
}

.demo h2 {
  margin: 0 0 1rem;
  font-size: 1.25rem;
}

.frame {
  margin: 0;
  padding: 0.75rem;
  /* mat around the image, photo print look */
  background: var(--card);
  border: 2px solid var(--ink);
}

.frame img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 75vh;
  object-fit: contain;
  /* whole image visible, never cropped */
  background: var(--paper);
  filter: sepia(0.25);
}

#demo-status {
  display: block;
  min-height: 24rem;
  /* keeps frame size steady while loading */
}

#demo-status {
  margin: 0;
  display: grid;
  place-items: center;
  font-style: italic;
  background: var(--paper);
}

.frame img[hidden],
#demo-status[hidden] {
  display: none;
}

.json {
  margin: 0.75rem 0;
  padding: 0.75rem 1rem;
  background: var(--ink);
  color: var(--paper);
  font-family: "Courier Prime", "Courier New", monospace;
  font-size: 0.9rem;
  white-space: pre-wrap;
  word-break: break-all;
}

.again {
  padding: 0.5rem 1.25rem;
  font: inherit;
  font-weight: 700;
  color: var(--ink);
  background: var(--card);
  border: 2px solid var(--ink);
  cursor: pointer;
}

.again:hover:not(:disabled),
.again:focus-visible {
  background: var(--mustard);
}

.again:disabled {
  opacity: 0.5;
  cursor: wait;
}

.pick {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 0 0 1rem;
  font-style: italic;
}

.pick select {
  padding: 0.35rem 0.75rem;
  font-family: "Courier Prime", "Courier New", monospace;
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
  background: var(--card);
  border: 2px solid var(--ink);
  cursor: pointer;
}

.pick select:focus-visible {
  outline: 3px solid var(--teal);
  outline-offset: 2px;
}